A tank truck is used in hazardous goods transport to move liquid, gaseous, or semi-solid dangerous materials by road in a sealed, pressure-rated vessel that is purpose-built for the cargo it carries. Unlike general freight vehicles, tank trucks are engineered to contain, protect, and safely deliver substances that would pose serious risks if released during transit. The sections below answer the most common questions shippers have about tank truck transport, from cargo types and regulations to when a tank truck is the right choice over an ISO tank container.
What types of hazardous goods are transported by tank truck?
Tank trucks transport a wide range of hazardous goods, including flammable liquids, corrosive chemicals, toxic substances, compressed gases, and oxidising agents. These materials span multiple ADR hazard classes and include industrial chemicals such as acids, solvents, resins, and petrochemicals, as well as food-grade and pharmaceutical liquids that require strict containment and hygiene standards.
In chemical logistics specifically, tank trucks are a primary mode for moving bulk quantities of substances that cannot safely or practically be palletised or containerised in drums. Common examples include sulphuric acid, sodium hydroxide, ethanol, glycerine, and various polymer intermediates. The cargo determines not only the tank design but also the driver certification, placarding requirements, and emergency response documentation required for each journey.
Some tank trucks are built for a single dedicated product, while others are cleaned and reused for compatible chemical families. Multi-compartment tank trucks, sometimes called double-chamber tank trucks, allow a single vehicle to carry two different products simultaneously, which improves efficiency on routes where return loads are available.
How does a tank truck differ from a standard freight truck?
A tank truck differs from a standard freight truck in that its load-carrying body is a fixed or semi-permanent vessel, not an open or enclosed cargo bed. Where a standard truck carries packaged goods on a flat or curtained trailer, a tank truck carries bulk liquid or gas directly inside a sealed tank that forms part of the vehicle structure itself.
The engineering differences are substantial. Tank trucks are built from materials selected for chemical compatibility, such as stainless steel, aluminium, or lined carbon steel, depending on the cargo. They include pressure relief valves, bottom discharge outlets, vapour recovery systems, and in some cases heating coils or insulation to maintain the product at a required temperature during transit.
From a regulatory standpoint, tank trucks carrying dangerous goods must comply with ADR (European Agreement Concerning the International Carriage of Dangerous Goods by Road) requirements that do not apply to standard freight vehicles. This includes tank approval certificates, periodic inspections, specialised driver training, and specific placarding and documentation requirements that accompany every shipment.
What regulations govern tank truck transport of dangerous goods?
Tank truck transport of dangerous goods in Europe is primarily governed by ADR, the European Agreement Concerning the International Carriage of Dangerous Goods by Road. ADR sets out requirements for vehicle construction, tank approval, driver training, documentation, labelling, and emergency procedures across all participating countries, making it the central regulatory framework for hazardous materials transport by road.
ADR is updated on a two-year cycle and classifies dangerous goods into nine hazard classes, each with specific rules for packaging, tank design, and transport conditions. Every tank truck used for ADR transport must carry an approved tank certificate, and the vehicle must display orange hazard plates with UN numbers and hazard identification codes that emergency services can read in the event of an incident.
Driver certification under ADR
Drivers transporting dangerous goods by tank truck must hold an ADR certificate specific to the class of goods they carry. This involves formal training and examination, and the certificate must be renewed periodically. Operators who work with reputable chemical logistics providers benefit from carriers whose drivers undergo continuous internal and external ADR training, not just the minimum required for certification.
Documentation requirements
Every hazardous goods shipment by tank truck must be accompanied by a transport document, a safety data sheet for the substance, and a written instruction set for the driver covering emergency actions. Consignors are responsible for accurate classification and correct documentation, and errors can result in significant legal and financial liability in addition to safety risks.
What are the different types of tank trucks used in chemical logistics?
In chemical logistics, tank trucks are categorised by their construction, pressure rating, and the type of cargo they are designed to carry. The main types are atmospheric tanks, pressure tanks, cryogenic tanks, and multi-compartment tanks, each suited to a different range of products and transport conditions.
Atmospheric tanks operate at or near ambient pressure and are used for non-volatile liquids such as acids, alkalis, and vegetable oils. They are the most common type in chemical distribution and are typically made from stainless steel or lined carbon steel depending on the product’s corrosivity.
Pressure tanks are designed to carry liquefied gases or volatile chemicals that generate vapour pressure above atmospheric levels. These tanks are built to withstand higher internal pressures and are subject to stricter construction and inspection standards under ADR.
Cryogenic tanks carry gases that are liquefied by cooling to very low temperatures, such as liquid nitrogen or liquid oxygen. These require heavy insulation and specialised handling equipment at both origin and destination.
Multi-compartment or double-chamber tank trucks divide the tank body into two or more separate sections, allowing different products to be transported in a single vehicle. This configuration is particularly useful for chemical distributors managing multiple product lines on the same route, reducing cost per delivery and improving vehicle utilisation.
When should a shipper choose a tank truck over ISO tank containers?
A shipper should choose a tank truck over an ISO tank container when the shipment is a domestic or short-haul road movement, when the delivery point lacks container-handling equipment, or when the product requires direct door-to-door road delivery without transhipment. ISO tanks are better suited to multimodal or intercontinental movements where sea or rail legs are involved.
Tank trucks offer faster turnaround for regional deliveries because they do not need to be repositioned through a port or depot. They can discharge directly at a customer’s storage facility using the vehicle’s own pump or gravity discharge system, which simplifies the receiving process. For time-sensitive chemical deliveries within Europe, a tank truck is often the most practical and cost-effective option.
ISO tank containers, by contrast, are the preferred choice when cargo must travel by sea, when a shipper wants to use the container as temporary storage at the destination, or when the movement involves multiple transport modes. ISO tanks are also better suited to longer dwell times and can be stored on-site between uses, which adds flexibility for importers managing variable demand.
The decision ultimately depends on the origin-destination pair, the volume, the product’s handling requirements, and the infrastructure available at both ends of the supply chain. For complex movements that involve both road and sea legs, intermodal logistics solutions can combine tank truck and ISO tank transport within a single coordinated shipment.
How KEMITO supports tank truck and hazardous goods transport
KEMITO is a full-service chemical logistics provider with its own transport fleet and ADR-certified drivers, offering end-to-end solutions for hazardous goods transport across EMEA and beyond. For shippers managing complex or high-volume chemical movements, KEMITO provides:
- Road transport in single and double-chamber tank trucks, ISO tanks, and other trailer configurations
- ADR-trained drivers with continuous internal and external safety certification
- Shipment tracking from collection to delivery across road, rail, sea, and air
- Warehousing, bulk storage, and value-added services including blending, drumming, and repacking
- Customs support and freight forwarding for cross-border and worldwide destinations
- Flexible supply options for varying volumes, from individual deliveries to fully outsourced distribution
Whether you need a single tank truck movement or a fully managed chemical transport fleet solution, KEMITO can coordinate the entire supply chain from one platform. Contact KEMITO today to discuss your hazardous goods transport requirements and find the right solution for your operation.